by Dr. Jason Lisle | Apr 3, 2026 | Physics, Refuting the Critics
In this article, I will demonstrate that the philosophy of presentism as espoused by Phillip Dennis is not compatible with the physics of Einstein. Recall that presentism is the claim that “only present things exist.” In its strong form, it denies the existence of past things and future things. I have already shown in the last three articles that presentism is unbiblical and illogical and that arguments against eternalism are fallacious. Indeed, the Bible affirms eternalism – that the past, present, and future are equally real. In fact, all events that have ever happened or ever will happen are already fully known to God (e.g., Isaiah 46:9-10). In this article, we will show that the physics of Einstein requires the reality of past and future events and, therefore, is incompatible with presentism. Indeed, the physics of Einstein has rightly been seen as a vindication of the biblical view of time.
by Dr. Jason Lisle | Nov 7, 2025 | Physics, Refuting the Critics
We have been analyzing the claims of Phillip Dennis and his criticism of the ASC model. In particular, Dennis claims to have refuted the conventionality thesis – Einstein’s claim that the one-way speed of light “is in reality neither a supposition nor a hypothesis about the physical nature of light, but a stipulation which I can make of my own freewill in order to arrive at a definition of simultaneity” [emphasis in original] (Einstein 1916). Conversely, Dennis claims that Einstein is wrong and that the one-way speed of light is necessarily the same as the round-trip speed of light: c = 186,282.397 miles per second in vacuum. However, we have already shown that Dennis’s previous attempts to prove this were fallacious because they begged the question. That is, Dennis had used equations that tacitly assume the one-way speed of light. In his latest article, Dennis claims that the one-way speed of light has been empirically measured in two independent experiments. We will examine the first of these here. We will again show that Dennis has once again begged the question. That is, he unwittingly assumed the one-way speed of light is isotropic in his argument.
by Dr. Jason Lisle | Oct 24, 2025 | Apologetics, Physics, Refuting the Critics
In this article, we review – at a layman level – the original argument that Phil Dennis made against ASC and my refutation of his claims. This is important for two reasons. First, Dennis’s first article contained a great deal of mathematics, and this required me to reply in kind. Therefore, my goal here is to explain the disagreement between us without using any equations so that the layman may understand the essence of the dispute.
